铜基自润滑复合材料的电弧烧蚀性能  

Arc Erosion Properties of Cu-based Self-lubricating Composites

作　　者：钱刚 凤仪 黄晓晨 张竞成 刘文宏 张学斌 蔡承宇[2] Qian Gang;Feng Yi;Huang Xiaochen;Zhang Jingcheng;Liu Wenhong;Zhang Xuebin;Cai Chengyu(Hefei University of Technology, Hefei 230009, China;Zhejiang Industry ＆ Trade Vocational College, Wenzhou 325002, China)

机构地区：[1]合肥工业大学,安徽合肥230009 [2]浙江工贸职业技术学院,浙江温州325002

出　　处：《稀有金属材料与工程》2018年第6期1818-1823,共6页Rare Metal Materials and Engineering

基　　金：安徽省自然科学基金面上项目(1808085ME122);中央高校基本科研业务费专项资金(JZ2015HGBZ0473);温州市科技计划项目(G20150023)

摘　　要：研究了铜-30%(体积分数,下同)石墨、铜-30%二硫化钨和铜-30%二硫化钼3种铜基自润滑复合材料的抗电弧烧蚀性能。结果表明:石墨熔点较高,在电弧放电瞬间主要以氧化的形式损耗,而二硫化钨和二硫化钼则会在电弧放电造成的高温下发生熔化甚至与铜基体发生化学反应,所以铜-30%石墨复合材料的抗电弧烧蚀性能要优于铜-30%二硫化钨和铜-30%二硫化钼复合材料。铜基自润滑复合材料的电弧烧损机制主要有材料的氧化、熔化飞溅、内部化学反应以及疲劳脱落。The arc erosion properties of Cu-30 vol%gaphite, Cu-30 vol%WS2 and Cu-30 vol%MoS2 self-lubricating composites were investigated. The results demonstrate that graphite cannot be melted and is mainly lost in the form of oxidation during the arc discharge process because of its extremely high melting point. In contrast, WS2 and MoS2 are melted and even react with the Cu matrix due to the high temperature caused by the arc discharge. Therefore, the arc erosion resistance of Cu-30 vol%gaphite composite is better than that of the Cu-30 vol%WS2 and Cu-30 vol%MoS2 composites. The main arc erosion mechanism of Cu-based self-lubricating composites is found to be oxidation, melting, ejecting, internal chemical reaction and fatigue peeling.

关 键 词：铜基自润滑复合材料 石墨 二硫化钨 二硫化钼 电弧烧蚀 

分 类 号：TB333[一般工业技术—材料科学与工程]